I was here once to buy an emergency suit for an interview. Had to go with a black Calvin Klein suit.
Service: The employees are attentive and courteous. They do cater to the customer. That being said, some of their style advice is out of date. They tried to sell me a center-vent, pleated pants suit which should tell you something. However, they were quick to pull out what I suggested and help me alter it.
Product: I'll be honest, I 98% regret buying the suit. All of their suits are fused construction and out-of-date. The fused construction means that after a few times of dry cleaning, I'll be seeing bubbles popping up in the fabric or the glue holding pices together will start to come apart. That's why I've only worn the suit once and put it in storage. That being said, it did save me in this instance. However, I prefer SuitSupply, which is better quality, construction, and cheaper than MW's full price suits.
Conclusion: MW will serve those who need a quick suit or those who don't care about suit quality and price. However, if you're looking for a better suit for the same or cheaper price, go somewhere else. Honestly, Macy's suits are cheaper and the exact same quality as MW.